asic activities for the panda gsi 22.04.2009 peter wieczorek
DESCRIPTION
Peter Wieczorek 3 Existing ASIC and ImprovementTRANSCRIPT
ASIC Activities for the PANDA EMC @ GSIASIC Activities for the PANDA EMC @ GSI
22.04.2009Peter Wieczorek
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OverviewOverview
Existing ASIC and Improvement
Setup for Crystal Matrix Measurements
Data Acquisition
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Existing ASIC and ImprovementExisting ASIC and Improvement
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Block Schematic Block Schematic
-
preamplifier
first shaper
second shaper
third shaper
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ASIC LayoutASIC LayoutShaper stage
Out
put s
tage
Prea
mpl
ifier
sta
ge
Channel 1
Channel 2
Voltage reference
Prozess: 350 nm - CMOS
Dimension: 3.3 mm x 3.3 mm
Connections: 64
Components: Transistors: 4841 Capacitors: 1729Resistors: 386
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ResultsResults
Requirements Results @ T = - 20° C
Unit
Noise: 4500 4456 ± 35 e-
Max. input charge: 7 7,84 ± 0,4 pC
Dyn. range: 10000 10889 ± 251 1
Integration time: 250 248 ± 3 ns
Event rate: 350 500 kHz
Power consumption: 60 52 ± 1 mW/Channel
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Next ASIC IterationNext ASIC Iteration
Next iteration should be the final design Implementation of an additional DAC Extention of the existing logic Define # of bits for chip IDOptimisation of the power consumption
Open questions:What is the next readout device after the ASIC ? (Power consumption, output load, …)How many ASICs will be connected to a cluster ? (Chip ID)
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Setup for Crystal Matrix MeasurementsSetup for Crystal Matrix Measurements
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Readout ChainReadout Chain
Crystal APD ASICDifferential output signal
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SetupSetup
Matrix readout 4 x 4 array One APD per crystalSeperate high voltagesTwo APDs connected one ASIC
4 x 4 matrix2 ASICs on one PCB
1
16
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Crystal MatrixCrystal Matrix
Status:
Mechanical setup: Gießen/GSI availableCrystals: Gießen availableASICs: GSI available
PCB with buffer: GSI Under developmentAPDs: Gießen available
Cooling system: Gießen availableDifferential ADC: KVI ? ?
DAQ system: KVI ? ?
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Data AcquisitionData Acquisition
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DAQ - SystemDAQ - System
Crystal APD ASIC
DAQ - SystemDigitize the
analog output signals
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Readout Board Developed by J.HoffmannReadout Board Developed by J.Hoffmann
Connection to the Data Acquisition
LAB: USB - Connection
16 Differential analog inputsInput range: ± 1 VADC: 12 Bit, 65MS/s
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Thanks….Thanks….